Globe-holder for electric, gas, and other lamps.



J. A. SHAW.

I GLOBEHOLDER FOR ELECTRIC, GAS, AND OTHER LAMPS.

APPLIOATION TILED JAN. 20, 1914.

1,130,113; Patented Mar.2,1915.

.F/GJ. Fig.2.

THE NORRIS PETERS 60., PHOTG-LITHOH WASHINGTON. n. c.

JOHN AITKEN SHAW, OF WEST MOUNT, -MONTREAL, QUEBEC, CANADA.

GLOBE-HOLDER FOR ELECTRIC, GAS, AND OTHER LAMPS.

- Specification of Letters Patent.

Patented Mar. 2, 1915.

Application filed January 20, 1914. Serial No. 813,199.

To all whom it may concern:

Be it known that I, JOHN AITKEN SHAW, a subject of the King of GreatBritain, and resident of 4418 Landsdowne avenue, West Mount, Montreal,Canada, have invented new and useful Improvements in Globe- Holders forElectric, Gas, and other Lamps, of which the following .is aspecification.

This invention comprises improvements in globe or shade holders forelectric, gas and other lamps and relates to that type of globe or shadeholder in which spring arms or clips which may be of bent wire, arehoused within an annular recess in the gallery or casing. These arms orclips normally spring toward the center so as to engage the grooved rimof a globe or shade inserted in the holder and the arms having points ofsupport or fixture on the gallery or casing, support the globe from thelatter in an easy and resilient manner. In order to remove the globe,the spring arms are moved outwardly so as to disengage from the groovedrim of the globe. To facilitate the disengagement, the free ends of thespring arms are overlapped or crossed and the extremities, which aresuitably bent outwardly, are preferably furnished with knobs or handles,so that by grasping these latter and pressing them toward one anotherthe spring arms are readily moved outwardly and disengaged as aforesaid.Now it frequently happens that one spring arm is stiffer or possesses agreater resistance to bending than the other and the consequence is thatwhereas the weaker spring arm is moved outwardly into the annular recessin the gallery, the stronger spring arm is not moved outwardlysufliciently by v the time that the knobs or handles are pressed intocontact with one another. The result is that the rim of the globe, uponthe latter being removed, fouls the stronger spring arm, and thisaccounts for many breakages. Even if there be but little differencebetween the strengths of the springs, it is not certain that the oneknob, which is being pressed by the thumb of the operator will be movedover the same distance as the other knob which is being pressed by afinger and therefore unequal pressures upon the knobs will have the sameresult as above described in connection with springs of unequalstiffness.

This invention provides a construction of such a holder in which thespring arms are so formed that the extremities or. knobs are movabletoward or from one another in the same plane and are stopped intheirmovement toward one another by a stop against which they arepressed when in the globe releasing position.

The invention while applicable to lamps generally is particularlyapplicable in the case of pendant or bracket electric lamps on railwaycarriages where the globes require to be attended to in a limited amountof time and where it is not always possible to rely upon such carefultreatment being given to the globes or shades as may be given in otherplaces.

In order to enable the invention to be readily understood, reference ismade to the accompanying drawings in which Figure 1 is a side elevationof the improved globe or shade holder with the spring clips in theinoperative position. Fig. 2 is a side elevation showing the springclips in the operative position. Fig. 3 is an inverted plan of Fig. 1and Fig. 4 is an inverted plan of Fig. 2.

Referring to the drawing the gallery or casing a is bell-shaped andadapted to contain or receive an incandescent electric lamp or the upperportion or holder thereof but the gallery may be of any shape or type ascircumstances may require. Around the bottom of the casing a is formedan annular recess 6 for housing the spring arms or clips 0 0. The lastnamed are suitably formed by bending a. single piece of wire intoapproximately circular form and crossing or overlapping the endsthereof, the extremities (Z (Z being bent outwardly, as seen in Figs. 3and 4:, and furnished with suitable knobs or handles 6 e.

The end portions of the wire are suitably flattened or cut away wherethey cross or overlap as seen best in Figs. 1 and 2 these portions beingindicated by the lines f Figs. 1, 3 and 4, these cut away portionsenabling the extremities cl cl to lie in about the same plane.

The wire ring is preferably formed with a bend, or kink g or it might bea loop, at a point diametrically opposite the knobs e e and at thispoint the ring is soldered to the casing or gallery.

Slots h are formed in the recessed portion 12 of the gallery or casing aat the points where the extremities d d emerge, the .slots being ofsuflicient length circularly to permit of moving the extremities (Z dover the required arc for releasing or engaging the arms 0 c from orwith the globe or shade. Now owing to the separate slots h it beingformed, the intermediate piece 7' acts as a stop for the extremities d dwhen drawing the two knobs e e toward one another in the act ofexpanding the clip or holder, and when the said extremities are incontact with the stop piece 7' it will be observed from Fig. 3 that thearms or clips 0 0 are COI11- pletely within the housing and out of theway of the globe rim which is to be inserted into or which is beingremoved from the holder. 7

' Instead of two separate slots'h h a single slot may be formed and across piece may be secured across the same in the position of the stoppiece j, or any other suitable stop may be employed for limiting, inlike manner, the movements of the extremities d cl toward one another.

I claim a 1. Globe or shade holder comprising a gallery, bowed springclip arms mounted on said gallery and adapted to contract intoengagement with the rim of a globe or shade inserted into said gallerysaid arms each having one end overlapping the adjacent end of the otherarm, said overlapping ends being of reduced thickness, means on the saidends adapted to be pressed toward one another for causing the saidarmsto be expanded in order to release them from the globe or shade, saidmeans being movable in the same plane owing to the reduced thickness ofsaid ends, and stopping means adapted to limit the releasing movementimparted to the said arms substantially as set forth.

2Q Globe or shade holder comprising a gallery formed with an annularrecess, bowed spring clip arms mounted on said gallery and adapted tocontract into engagement with the rim of a globe or shade inserted intosaid gallery and to be exdop ies of this patent may be obtained forpanded'into the recess in said gallery for the purpose of releasing suchglobe or shade said arms each having one end overlapping an adjacent endof the other arm, the overlapping ends being of reduced thickness,outwardly directed projections on the extremities of said overlappingends said projections extending through an aperture in the recessedportion of said gallery, and being movable in the same plane owing tothe reduced thicknessof said ends, and a stop in said aperture disposedbetween said projections for limiting the movement thereof when pressedtogether for expanding the arms substantially as and for the purpose setforth.

3. Globe or shade holder comprising a gallery formed with an annularrecess two circumferential slots being formed in said recess, bowedspring clip arms mounted on said gallery and adapted to contract intoengagement with the rim of a globe or shade; inserted into said gall eryand to be expanded into the recess in said gallery for the purpose ofreleasing such globe or shade said arms each having one end overlapplngan ad acent end of the otherarm, said overlapping ends being formedwlthinclined flats on their engaging adj acent'ly surfaces, outwardlydirected projections on V the extremities of said overlapping ends saidprojections extending through respective apertures in the recessedportion of said gallery, and being movable in the same plane toward orfrom one another owing to the presence of said flats, the metal of thecasing lying between the adjacent ends of the two slots serving as astop for limiting the movement of the pro ectlons when pressed togetherfor expanding the arins'substantially as and for the purpose set forth,

l/Vitnesses:

CHAS. IsAAos, JAs. M. OCoNNoR.

Washington, D. C.

JOHN AITKEN SHAW. i?

